Cheating boyfriends (not mine)

To keep a long story short as possible, I am in an extremely healthy, supportive, committed relationship. But that hasn’t always been the case I’ve had my share of assholes so I can relate.

My best friend has dated one jerk after the other. She puts up with stuff as long as possible because they fund her life. She’s been seeing and living with this one guy for almost 2 years now, he still has not told her he loves her. Like not once. And a few days ago she received a message online from another woman that he was cheating on her. She confronted him and when she first told me the story she lied and said that he didn’t actually cheat. Well today she confesses that he did but she wants “no judgement”.

From the way she’s talking she’s already making up excuses and talking about “working on things” and I’ve just had it. I will admit I probably could’ve handled things in a calmer matter but I just want to beat it into her that she deserves better and that guys aren’t supposed to cheat on you (I truly think she believes every man cheats) well now she’s mad at me.

Here’s my question: am I really wrong? How do you expect to tell the people who love you most when someone else has done you wrong and think that you can just sit by and listen to it for years. I finally told her if she doesn’t want to hear it then she can’t tell me stuff like that.